QatarEnergy has entered into an agreement to buy a stake in an offshore oil block held by Chevron in Namibia, as part of the state-owned company’s expansion plans in the southern African nation. As part of the agreement, QatarEnergy is acquiring a 25 per cent interest in Petroleum Exploration License 0082 (PEL82), comprising blocks 2112B and 2212A, QatarEnergy said in a statement on Monday.